Question

Tropical forests contain dense trees, which allow less sunlight to penetrate. Emergent trees are trees that grow to a height of more than 45 to 55 meters, above the usual height of trees in tropical forests. Which system provides the best possible explanation for why these trees grow to those heights?
A.
growth pattern
B.
homeostasis
C.
nervous system coordination in plants
D.
phototropism

Answer 1

Answer:

D. phototropism.

Explanation:

Phototropism is the behavior of an organism in which it reacts to sunlight. Tropical trees show an example of phototropism - they need the sunlight and that is why they tend to grow taller and towards the source of light. This is called positive phototropism.

A type of phototropism where plants grow away from the sunlight is called negative phototropism.